YARD's default template vulnerable to Cross-site Scripting in generated frames.html

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.011, the 64th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 31 Oct 2026, 15:16 UTC First seen by agentprime
2. 31 Oct 2026, 15:16 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-8mq4-9jjh-9xrc
• OSV: GHSA-8mq4-9jjh-9xrc
• github.com/lsegal/yard/security/advisories/GHSA-8mq4-9jjh-9xrc
• nvd.nist.gov/vuln/detail/CVE-2024-27285
• github.com/lsegal/yard/pull/1538
• github.com/lsegal/yard/commit/1fcb2d8b316caf8779cfdcf910715e9ab583f0aa
• github.com/lsegal/yard/commit/2069e2bf08293bda2fcc78f7d0698af6354054be
• github.com/advisories/GHSA-8mq4-9jjh-9xrc
• github.com/lsegal/yard
• github.com/rubysec/ruby-advisory-db/blob/master/gems/yard/CVE-2024-27285.yml
• lists.debian.org/debian-lts-announce/2024/03/msg00006.html
• lists.fedoraproject.org/archives/list/[email protected]/message/MR3Z2E2UIZZ7YOR7R645EVSBGWMB2RGA

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.